private static ImmutableDictionary <string, ImmutableList <LinkSourceInfo> > GetFileLinkSource(string currentFile, HtmlDocument doc, ImmutableDictionary <string, FileAndType> sourceFiles)
{
var fileLinkSources = new Dictionary <string, List <LinkSourceInfo> >();
foreach (var pair in (from n in doc.DocumentNode.Descendants()
where !string.Equals(n.Name, "xref", StringComparison.OrdinalIgnoreCase)
from attr in n.Attributes
where string.Equals(attr.Name, "src", StringComparison.OrdinalIgnoreCase) ||
string.Equals(attr.Name, "href", StringComparison.OrdinalIgnoreCase)
where !string.IsNullOrWhiteSpace(attr.Value)
select new { Node = n, Attr = attr }).ToList())
{
string anchor = null;
var link = pair.Attr;
string linkFile = link.Value;
var index = linkFile.IndexOfAny(UriFragmentOrQueryString);
if (index != -1)
{
anchor = linkFile.Substring(index);
linkFile = linkFile.Remove(index);
}
if (RelativePath.IsRelativePath(linkFile))
{
var path = (RelativePath)currentFile + RelativePath.FromUrl(linkFile);
var file = path.GetPathFromWorkingFolder();
if (sourceFiles.ContainsKey(file))
{
string anchorInHref;
if (!string.IsNullOrEmpty(anchor) &&
string.Equals(link.Name, "href", StringComparison.OrdinalIgnoreCase))
{
anchorInHref = anchor;
}
else
{
anchorInHref = null;
}
link.Value = file.UrlEncode().ToString() + anchorInHref;
}
if (!fileLinkSources.TryGetValue(file, out List <LinkSourceInfo> sources))
{
sources = new List <LinkSourceInfo>();
fileLinkSources[file] = sources;
}
sources.Add(new LinkSourceInfo
{
Target = file,
Anchor = anchor,
SourceFile = pair.Node.GetAttributeValue("sourceFile", null),
LineNumber = pair.Node.GetAttributeValue("sourceStartLineNumber", 0),
});
}
}
return(fileLinkSources.ToImmutableDictionary(x => x.Key, x => x.Value.ToImmutableList()));
}
